It's very easy! Fine tuning for all bassists.TN-1B is tuning meter only for a bassist.It detects the pitch of notes that picked up by a microphone, and it displays the difference from correct pitch.It's really easy to use.High-precision, high-performance.Supports tuning-sets below. Standard Half Step Down Full Step Down 1&1/2 Steps Down Drop-D Lowered CelloSupports five or six string bass.It has a simple drum machine function. The rhythm pattern that you made, you can send to your friend by AirDrop or email. And also the data is a common use with TN-1G(guitar tuner), you can share the rhythm pattern with the guitarist of your band.You can change reference pitch-A between 438Hz and 445Hz.You can change note notation language. English(C, C#, D, E , B) Italian(Do, Do#, Re, Mi , Si) German(C, Cis, D, E , H) French(Ut, Ut#, R, Mi , Si) Chinese(C, C, D, E , B)TN-1B has a tuning fork of reference pitch-A.This app has a slight delay before pointing to the pitch. Is the time lag for adapting to bass tone. Please acknowledge it.When you tune the bass, if the meter makes a jerky movement, turn off auto mode, please try twang harmonics(flageolet tones) on 12th-fret. May result in a smooth movement.TN-1B will support tuning of your bass, until the day you hire an instrument technician.NOTE.Octave higher from target pitch, and in pitch of octave lower, TN-1B was made needle to point to 0. From this, TN-1B displaying "too high", and pitch of your bass is further increased, the meter will be displayed as "too low".For this reason, you wind up the string, is very dangerous that break a string, even if meter displayed as "too low". If you're a bass beginner, then it is necessary that people who can well to tuning your bass. Please use TN-1B only to fine-tune.This app has been made to detect the pitch as accurate as possible, but it will indicate incorrect pitch by the situation may occur.Please acknowledge it.